Periods for Graduation Black Belt Taekwondo

Periods for Graduation Black Belt Taekwondo
For black belt category, shall observe the following periods:

Graduation	GRACE MIN	DAN age	POOM age
10 ° Gub the first Dan	Two years	15 years	15 years
Dan for the first 2nd Dan	A year	16 years	15 years
Dan 2 ° to 3 ° Dan	Two years	18 years	15 years
Dan 3 ° to 4 ° Dan	Three	21 years	Up to 18 years
Dan 4 ° to 5 ° Dan	Four	25 years	22 years
Dan 5 ° to 6 ° Dan	Five years	30 years	30 years
6 ° to 7 ° Dan Dan	Six years	36 years	36 years
Dan 7 ° to 8 ° Dan	Eight years	44 years	44 years
Dan 8 ° to 9 ° Dan	Nine years	53 years	53 years

Source: Taekwondo